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Chd|====================================================================
Chd|  DT1LAWT                       source/elements/truss/dt1lawt.F
Chd|-- called by -----------
Chd|        TINIT3                        source/elements/truss/tinit3.F
Chd|-- calls ---------------
Chd|====================================================================
      SUBROUTINE DT1LAWT(PM, DELTAX, MAT, MXG, DTX)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "param_c.inc"
#include      "vect01_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
C     REAL
      my_real
     .   PM(NPROPM,*), DELTAX(*), DTX(*)
      INTEGER MAT(*), MXG(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I, MX
C     REAL
      my_real
     .   RHO0, E, C1, SSP, C, 
     .   IYY, IZZ
C
C
      DO 10 I=LFT,LLT
         MX     =MAT(I)
         RHO0   =PM( 1,MX)
         E      =PM(20,MX)
         SSP    =SQRT(E/RHO0)
         DTX(I) =DELTAX(I) / MAX(EM20,SSP)
 10   CONTINUE
C
      RETURN
      END
